Marker pen having casing made of transparent material



FIG. 1 is a top left perspective view of a marker pen having casing made of transparent material showing my new design;

FIG. 2 is a top right perspective view;

FIG. 3 is a top plan view

FIG. 4 is a bottom plan view;

FIG. 5 is front elevational view;

FIG. 6 is a rear elevational view;

FIG. 7 is a right side elevational view;

FIG. 8 is a left side elevational view;

FIG. 9 is a top left perspective view in an exploded condition;

FIG. 10 is a top right perspective view of FIG. 9;

FIG. 11 is a top plan view of FIG. 9;

FIG. 12 is a bottom plan view of FIG. 9;

FIG. 13 is a front elevational view of FIG. 9;

FIG. 14 is a rear elevational view of FIG. 9;

FIG. 15 is a right side elevational view of FIG. 9; and,

FIG. 16 is a left side elevational view of FIG. 9. 

The ornamental design for a marker pen having casing made of transparent material, as shown and described. 